The original programmer left the company six months ago. The password was stored on a laptop that was recently wiped. The OEM is based in another country and won't respond for days.
If you can still communicate with the PLC via , you can perform a factory reset: Open the STEP 7-Micro/WIN SMART software. Go to the PLC menu tab. Select Clear... or Reset to Factory Defaults . s7-200 smart password unlock
. In the dimly lit office, Elias scoured forums and technical guides. He tried the SIEMENS S7 default passwords —"basisk" and "1234"—to no avail. He then remembered a technique used for removing know-how protection . While the S7-200 SMART The original programmer left the company six months ago